/* * File: Gatelinked.cpp * * Version: 1.0 * * Created: 11/29/18 * * Copyright: Copyright © 2018 Airwindows, Airwindows uses the MIT license * * Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in * consideration of your agreement to the following terms, and your use, installation, modification * or redistribution of this Apple software constitutes acceptance of these terms. 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APPLE MAKES NO WARRANTIES, EXPRESS OR * IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE * OR IN COMBINATION WITH YOUR PRODUCTS. * * IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, * REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER * UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN * IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ /*============================================================================= Gatelinked.cpp =============================================================================*/ #include "Gatelinked.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AUDIOCOMPONENT_ENTRY(AUBaseFactory, Gatelinked) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Gatelinked::Gatelinked //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Gatelinked::Gatelinked(AudioUnit component) : AUEffectBase(component) { CreateElements(); Globals()->UseIndexedParameters(kNumberOfParameters); SetParameter(kParam_One, kDefaultValue_ParamOne ); SetParameter(kParam_Two, kDefaultValue_ParamTwo ); SetParameter(kParam_Three, kDefaultValue_ParamThree ); SetParameter(kParam_Four, kDefaultValue_ParamFour ); SetParameter(kParam_Five, kDefaultValue_ParamFive ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Gatelinked::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Gatelinked::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Gatelinked::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Gatelinked::GetParameterInfo(AudioUnitScope inScope, AudioUnitParameterID inParameterID, AudioUnitParameterInfo &outParameterInfo ) { ComponentResult result = noErr; outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable | kAudioUnitParameterFlag_IsReadable; if (inScope == kAudioUnitScope_Global) { switch(inParameterID) { case kParam_One: AUBase::FillInParameterName (outParameterInfo, kParameterOneName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamOne; break; case kParam_Two: AUBase::FillInParameterName (outParameterInfo, kParameterTwoName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamTwo; break; case kParam_Three: AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamThree; break; case kParam_Four: AUBase::FillInParameterName (outParameterInfo, kParameterFourName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamFour; break; case kParam_Five: AUBase::FillInParameterName (outParameterInfo, kParameterFiveName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamFive; break; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Gatelinked::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Gatelinked::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // state that plugin supports only stereo-in/stereo-out processing UInt32 Gatelinked::SupportedNumChannels(const AUChannelInfo ** outInfo) { if (outInfo != NULL) { static AUChannelInfo info; info.inChannels = 2; info.outChannels = 2; *outInfo = &info; } return 1; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Gatelinked::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Gatelinked::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Gatelinked::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Gatelinked::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____GatelinkedEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Gatelinked::GatelinkedKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Gatelinked::Reset(AudioUnitScope inScope, AudioUnitElement inElement) { iirLowpassAL = 0.0; iirLowpassBL = 0.0; iirHighpassAL = 0.0; iirHighpassBL = 0.0; iirLowpassAR = 0.0; iirLowpassBR = 0.0; iirHighpassAR = 0.0; iirHighpassBR = 0.0; treblefreq = 1.0; bassfreq = 0.0; flip = false; fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX; fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX; return noErr; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Gatelinked::ProcessBufferLists //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ OSStatus Gatelinked::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFlags, const AudioBufferList & inBuffer, AudioBufferList & outBuffer, UInt32 inFramesToProcess) { Float32 * inputL = (Float32*)(inBuffer.mBuffers[0].mData); Float32 * inputR = (Float32*)(inBuffer.mBuffers[1].mData); Float32 * outputL = (Float32*)(outBuffer.mBuffers[0].mData); Float32 * outputR = (Float32*)(outBuffer.mBuffers[1].mData); UInt32 nSampleFrames = inFramesToProcess; double overallscale = 1.0; overallscale /= 44100.0; overallscale *= GetSampleRate(); //speed settings around release Float64 threshold = pow(GetParameter( kParam_One ),2); //gain settings around threshold Float64 trebledecay = pow(1.0-GetParameter( kParam_Two ),2)/4196.0; Float64 bassdecay = pow(1.0-GetParameter( kParam_Three ),2)/8192.0; Float64 slowAttack = (pow(GetParameter( kParam_Four ),3)*3)+0.003; Float64 wet = GetParameter( kParam_Five ); slowAttack /= overallscale; trebledecay /= overallscale; bassdecay /= overallscale; trebledecay += 1.0; bassdecay += 1.0; Float64 attackSpeed; Float64 highestSample; while (nSampleFrames-- > 0) { double inputSampleL = *inputL; double inputSampleR = *inputR; if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17; if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17; double drySampleL = inputSampleL; double drySampleR = inputSampleR; if (fabs(inputSampleL) > fabs(inputSampleR)) { attackSpeed = slowAttack - (fabs(inputSampleL)*slowAttack*0.5); highestSample = fabs(inputSampleL); } else { attackSpeed = slowAttack - (fabs(inputSampleR)*slowAttack*0.5); //we're triggering off the highest amplitude highestSample = fabs(inputSampleR); //and making highestSample the abs() of that amplitude } if (attackSpeed < 0.0) attackSpeed = 0.0; //softening onset click depending on how hard we're getting it if (flip) { if (highestSample > threshold) { treblefreq += attackSpeed; if (treblefreq > 2.0) treblefreq = 2.0; bassfreq -= attackSpeed; bassfreq -= attackSpeed; if (bassfreq < 0.0) bassfreq = 0.0; iirLowpassAL = iirLowpassBL = inputSampleL; iirHighpassAL = iirHighpassBL = 0.0; iirLowpassAR = iirLowpassBR = inputSampleR; iirHighpassAR = iirHighpassBR = 0.0; } else { treblefreq -= bassfreq; treblefreq /= trebledecay; treblefreq += bassfreq; bassfreq -= treblefreq; bassfreq /= bassdecay; bassfreq += treblefreq; } if (treblefreq >= 1.0) { iirLowpassAL = inputSampleL; iirLowpassAR = inputSampleR; } else { iirLowpassAL = (iirLowpassAL * (1.0 - treblefreq)) + (inputSampleL * treblefreq); iirLowpassAR = (iirLowpassAR * (1.0 - treblefreq)) + (inputSampleR * treblefreq); } if (bassfreq > 1.0) bassfreq = 1.0; if (bassfreq > 0.0) { iirHighpassAL = (iirHighpassAL * (1.0 - bassfreq)) + (inputSampleL * bassfreq); iirHighpassAR = (iirHighpassAR * (1.0 - bassfreq)) + (inputSampleR * bassfreq); } else { iirHighpassAL = 0.0; iirHighpassAR = 0.0; } if (treblefreq > bassfreq) { inputSampleL = (iirLowpassAL - iirHighpassAL); inputSampleR = (iirLowpassAR - iirHighpassAR); } else { inputSampleL = 0.0; inputSampleR = 0.0; } } else { if (highestSample > threshold) { treblefreq += attackSpeed; if (treblefreq > 2.0) treblefreq = 2.0; bassfreq -= attackSpeed; bassfreq -= attackSpeed; if (bassfreq < 0.0) bassfreq = 0.0; iirLowpassAL = iirLowpassBL = inputSampleL; iirHighpassAL = iirHighpassBL = 0.0; iirLowpassAR = iirLowpassBR = inputSampleR; iirHighpassAR = iirHighpassBR = 0.0; } else { treblefreq -= bassfreq; treblefreq /= trebledecay; treblefreq += bassfreq; bassfreq -= treblefreq; bassfreq /= bassdecay; bassfreq += treblefreq; } if (treblefreq >= 1.0) { iirLowpassBL = inputSampleL; iirLowpassBR = inputSampleR; } else { iirLowpassBL = (iirLowpassBL * (1.0 - treblefreq)) + (inputSampleL * treblefreq); iirLowpassBR = (iirLowpassBR * (1.0 - treblefreq)) + (inputSampleR * treblefreq); } if (bassfreq > 1.0) bassfreq = 1.0; if (bassfreq > 0.0) { iirHighpassBL = (iirHighpassBL * (1.0 - bassfreq)) + (inputSampleL * bassfreq); iirHighpassBR = (iirHighpassBR * (1.0 - bassfreq)) + (inputSampleR * bassfreq); } else { iirHighpassBL = 0.0; iirHighpassBR = 0.0; } if (treblefreq > bassfreq) { inputSampleL = (iirLowpassBL - iirHighpassBL); inputSampleR = (iirLowpassBR - iirHighpassBR); } else { inputSampleL = 0.0; inputSampleR = 0.0; } } //done full gated envelope filtered effect inputSampleL = ((1-wet)*drySampleL)+(wet*inputSampleL); inputSampleR = ((1-wet)*drySampleR)+(wet*inputSampleR); //we're going to set up a dry/wet control instead of a min. threshold flip = !flip; //begin 32 bit stereo floating point dither int expon; frexpf((float)inputSampleL, &expon); fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5; inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); frexpf((float)inputSampleR, &expon); fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5; inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); //end 32 bit stereo floating point dither *outputL = inputSampleL; *outputR = inputSampleR; //direct stereo out inputL += 1; inputR += 1; outputL += 1; outputR += 1; } return noErr; }